JPH0815486B2 - Method for manufacturing biomedical electrode - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a biomedical electrode which is used for measuring an electrocardiogram and is attached to the skin of a living body.

[0002]

2. Description of the Related Art Conventionally, this type of biomedical electrode has been constructed as shown in FIG. In FIG. 2, a label 2 is bonded to one side of a flat disk-shaped foam tape 1. Next, a coating 5 of Ag powder or AgCl powder having a binder of ABS resin is applied to the surface of the electrode element 4 opposite to the convex portion 4a. Next, a small hole 3 is formed in the center of the label 2 and the small hole 3
The convex portion 4a of the electrode element 4 is inserted into and attached to. Next, the sponge 6 is inserted into the foam tape 1, a curing agent such as boric acid or borate aqueous solution is injected into the sponge 6, and then a main agent such as polyvinyl alcohol aqueous solution is injected. As a result, the base material gradually increases in hardness by the curing agent, and the sponge 6 is impregnated with the solid gel. Finally, the sponge 6 is covered with a plastic cover 7. In some cases, the sponge 6 was impregnated with a highly viscous paste instead of being impregnated with the solid gel.

[0003]

Since the solid gel-impregnated sponge described above does not use a paste, it does not become sticky and does not need to be wiped off after being peeled from the skin. However, since the paste is not used and the water content of the solid gel is low, there is a problem that it takes time to adapt to the skin. For this reason, there is a risk that a drift or a polarization voltage is generated until the temperature becomes stable, which may affect the measurement.

Further, since the sponge impregnated with the highly viscous paste uses the paste, it easily fits on the skin,
Stable measurement can be performed immediately after mounting. However, if the cover 7 is pressed during storage, the paste may ooze out from the adhesive surfaces of the foam tape and the cover, and the surrounding area may be soiled.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method of manufacturing a biomedical electrode capable of preventing oozing of a paste and performing stable measurement immediately after mounting. And

[0006]

In order to achieve the above-mentioned object, the present invention forms a hole in the center of a label adhered to one surface of a flat disk foam tape, and the electrode element is formed in the hole. In the method for producing a biomedical electrode in which a convex portion is inserted and a sponge is inserted into the foam tape and adhered to the electrode element, a curing agent is injected into the sponge, then a main agent is injected, and after gel formation, A high-viscosity paste is injected into the central portion of the sponge on the side opposite to the electrode element.

[0007]

According to the above method, since the highly viscous paste is used, it easily fits on the skin, and since there is a sponge in which solid gel is impregnated between the paste and the label, the paste seeps out to the label side. There is no. Therefore, it does not exude during storage.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the method for producing a biomedical electrode of the present invention will be described below with reference to the drawings.

FIG. 1 shows the structure of the biomedical electrode manufactured according to this embodiment. In FIG. 1, parts corresponding to the parts of the conventional example shown in FIG. 2 are denoted by the same reference numerals, and description thereof will be omitted as appropriate. First, the paint 5 of Ag powder or AgCl powder with a binder of ABS resin is applied to the surface of the electrode element 4 opposite to the convex portion 4a. Next, the label 2 is adhered to one side of the foam tape 1, and the hole 3 is formed at the center of the label 2.
To form. Next, the convex portion 4a of the electrode element 4 is inserted into the hole 3 and attached. Next, the sponge 6 is inserted into the foam tape 1, a curing agent such as boric acid or a boric acid aqueous solution is injected into the sponge 6, and then the main component of the polyvinyl alcohol aqueous solution is injected. Curing starts immediately after that, and within a few seconds, it becomes a solid gel with elasticity. Up to this step, it is the same as the conventional example. In this embodiment, the high-viscosity paste is injected into the central portion of the sponge 6 after the main agent is injected to form the paste impregnated portion 8. Finally, the sponge 6 is covered with a plastic cover 7.

According to this embodiment, since the high-viscosity paste is impregnated in a part of the sponge 6, it easily fits on the skin,
Stable measurement can be performed immediately after mounting. Further, since the solid gel-impregnated sponge 6 is interposed between the paste impregnated portion 8 and the label 2, the paste will not ooze out even if the cover 7 is pressed during storage, which may impair the commercial value. Absent.

[0011]

As described above, according to the method for manufacturing a biomedical electrode of the present invention, since the highly viscous paste is injected into a part of the solid gel sponge, the paste is prevented from bleeding and mounted. Stable measurement can be performed immediately thereafter.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing the configuration of a biomedical electrode manufactured by an embodiment of a manufacturing method of the present invention.

FIG. 2 is a vertical cross-sectional view showing a structure of a biomedical electrode manufactured by an example of a conventional manufacturing method.

[Explanation of symbols]

1 Foam Tape 2 Label 3 Hole 4 Electrode Element 4a Projection 6 Sponge

Claims (1)

[Claims] 1. A flat disk-shaped foam tape is provided with a hole in the center of a label bonded to one surface thereof, a convex portion of an electrode element is inserted into the hole, and a sponge is inserted into the foam tape. In the method for manufacturing a biomedical electrode to be adhered to the electrode element, a sponge is injected with a curing agent and then a main agent is injected to form a gel, and then a central portion of a surface of the sponge opposite to the electrode element A method for producing a biomedical electrode, characterized in that a highly viscous paste is injected into the.